Linked Questions

2
votes
2answers
190 views

What is this component? Marked R5

Edited: Added more pictures. I'm reverse engineering a PCB but I'm stuck at one component. I can't find out what it is. I thought it is a diode because of the marking on top of it but when I test it ...
0
votes
4answers
4k views

Identifying an unmarked SMD capacitor and chip

So I'm setting myself into SMD components, as I want to create my own compact 5v step down converter, based on this component. I've read that these small brown ceramic capacitors are most likely ...
0
votes
1answer
438 views

KV7RF SMD Datasheet

Can someone identify a 5-Pin IC SMD with the marking code KV7RF? Searching in Google I didn't find anything. Any help on this?
0
votes
1answer
131 views

How do I know which component this is?

It says 100J and is much bigger than the other components. It has a resistance of 2ohm when the circuit is without power, and 15 ohm when I attach power to the circuit. It has a 1nf capacitance. So ...
2
votes
1answer
46 views

How to read markings on EMI/RFI filter

I am looking at a 3-pad SMD EMI filter chip (see photo) which is marked on the top with "222J". I am familiar with reading the markings on top of resistors and capacitors, but am not sure how to ...
0
votes
1answer
80 views

Query regarding unknown component

Hi guys I'm very new to this field and I'm having a problem with my sound devices 664 recorder. There's a faulty component and it needs to be replaced. I couldn't find the component here in the local ...
0
votes
0answers
47 views

Need help identifying this SOT23-5 with marking AAER

5 pin SOT23 with marking AAER. I've tried all the smd code web sites and document I can find. Just can't seem to solve this mystery. I think it's an opamp. Tried different opamps and still can't ...
0
votes
0answers
1k views

6 pin SMD IC marking code ADS

Please help me to identify 6 pin SMD IC with top marking ADS
1
vote
2answers
84 views

Component recognition from marking code

I need help to recognize a dead component from a lab instrument control board. It is part of a TTL-serial interface, arguably a logic gate or some level shifter, in a TSSOP-14 package. You can see ...
0
votes
1answer
79 views

Transistor identification

I have had a battery power bank from anker (powercore 20100mah) for some time now and it stopped working. Upon opening the case i saw a blown up transistor and i am having trouble identifying it. It ...
0
votes
1answer
72 views

Identify SOT-563 device with top code 49K

Please help me to identify this SOT-563 device with top code 49K
-4
votes
2answers
124 views

All electronic components have numeric values while resistors have colors: why is that? [closed]

I'm not an expert in this matter, so AFAIK the most part of electronic components have numeric values while resistors and few other components have colors: why is that? Why there is not a standard for ...
-3
votes
1answer
70 views

What is this IC “MC1MX31LDVMN5D”?

Would you please help me to know this IC.
0
votes
1answer
2k views

SMD transistor marking

I have a SOT-23 SMD transistor marked "2.X L" as shown in the image. I managed to find out that "2X" stands for 2N4401 and the dot seems to mean "lead free". But I couldn't find the meaning of the ...
1
vote
0answers
133 views

What are those components?

I am doing a reverse engineer project but I can't find what these components are. Can someone help me? The components have the folowing text on it: IC #1 = 7HUH 7HUH IC #2 = AAPQ AAPQ Here you ...

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